1. Add appropriate amount of varnish within the allowable range of color concentration.
2. Apply a varnish or varnish to the surface of the printing ink film.
3, increase the ink transparency, such as the use of high transparency of the highlight ink or adding the right amount of varnish, the use of smooth reflection of the substrate to enhance the shine.
4, to prevent the substrate surface adsorption, and reasonably improve the smoothness of the substrate printing surface.
5, pay attention to the temperature of the printing environment. In the case of high humidity, low humidity, and high temperature, when the plastic gravure printing is performed, the solvent vaporizes quickly (usually the surface of the ink film is dried within 1 minute), absorbing the heat around the ink film and causing rapid condensation of water vapor in the air. , Make the surface of printing ink film form fog, make the ink layer luster. During the rainy season, special attention must be given to controlling the temperature and humidity of the printing environment to ensure good printing results.
